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ASoC: imx-card: Add imx-card machine driver 

Add machine driver for i.MX boards, which supports
AK4458/AK5558/AK4497/AK5552 DAC/ADC attached to
SAI interface currently, but these DAC/ADCs are not
only supported codecs. This machine driver is designed
to be a more common machine driver for i.MX platform,
it can support widely cpu dai interface and codec
dai interface.

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Signed-off-by: Mihai Serban <mihai.serban@nxp.com>
Signed-off-by: Cosmin-Gabriel Samoila <cosmin.samoila@nxp.com>
Signed-off-by: Viorel Suman <viorel.suman@nxp.com>
Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Adrian Alonso <adrian.alonso@nxp.com>
Link: https://lore.kernel.org/r/1621247488-21412-2-git-send-email-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Shengjiu Wang 2021-05-17 18:31:28 +08:00 committed by Mark Brown
parent 623cd9cfca
commit aa736700f4
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
3 changed files with 859 additions and 0 deletions
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13
sound/soc/fsl/Kconfig
View File

@ -350,6 +350,19 @@ config SND_SOC_IMX_RPMSG
Say Y if you want to add support for SoC audio on an i.MX board with
a rpmsg devices.
config SND_SOC_IMX_CARD
tristate "SoC Audio Graph Sound Card support for i.MX boards"
depends on OF && I2C
select SND_SOC_AK4458
select SND_SOC_AK5558
select SND_SOC_IMX_PCM_DMA
select SND_SOC_FSL_SAI
select SND_SIMPLE_CARD_UTILS
help
This option enables audio sound card support for i.MX boards
with OF-graph DT bindings.
It also support DPCM of single CPU multi Codec ststem.
endif # SND_IMX_SOC
endmenu

2
sound/soc/fsl/Makefile
View File

@ -71,6 +71,7 @@ snd-soc-imx-spdif-objs := imx-spdif.o
snd-soc-imx-audmix-objs := imx-audmix.o
snd-soc-imx-hdmi-objs := imx-hdmi.o
snd-soc-imx-rpmsg-objs := imx-rpmsg.o
snd-soc-imx-card-objs := imx-card.o
obj-$(CONFIG_SND_SOC_EUKREA_TLV320) += snd-soc-eukrea-tlv320.o
obj-$(CONFIG_SND_SOC_IMX_ES8328) += snd-soc-imx-es8328.o
@ -79,3 +80,4 @@ obj-$(CONFIG_SND_SOC_IMX_SPDIF) += snd-soc-imx-spdif.o
obj-$(CONFIG_SND_SOC_IMX_AUDMIX) += snd-soc-imx-audmix.o
obj-$(CONFIG_SND_SOC_IMX_HDMI) += snd-soc-imx-hdmi.o
obj-$(CONFIG_SND_SOC_IMX_RPMSG) += snd-soc-imx-rpmsg.o
obj-$(CONFIG_SND_SOC_IMX_CARD) += snd-soc-imx-card.o

844
sound/soc/fsl/imx-card.c Normal file
View File

@ -0,0 +1,844 @@
// SPDX-License-Identifier: GPL-2.0+
// Copyright 2017-2021 NXP
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/gpio/consumer.h>
#include <linux/of_device.h>
#include <linux/i2c.h>
#include <linux/of_gpio.h>
#include <linux/clk.h>
#include <sound/soc.h>
#include <sound/pcm_params.h>
#include <sound/pcm.h>
#include <sound/soc-dapm.h>
#include <sound/simple_card_utils.h>
#include "fsl_sai.h"
enum codec_type {
CODEC_DUMMY = 0,
CODEC_AK5558 = 1,
CODEC_AK4458,
CODEC_AK4497,
CODEC_AK5552,
};
/*
* Mapping LRCK fs and frame width, table 3 & 4 in datasheet
* @rmin: min rate
* @rmax: max rate
* @wmin: min frame ratio
* @wmax: max frame ratio
*/
struct imx_akcodec_fs_mul {
unsigned int rmin;
unsigned int rmax;
unsigned int wmin;
unsigned int wmax;
};
/*
* Mapping TDM mode and frame width
*/
struct imx_akcodec_tdm_fs_mul {
unsigned int min;
unsigned int max;
unsigned int mul;
};
/*
* struct imx_card_plat_data - specific info for codecs
*
* @fs_mul: ratio of mclk/fs for normal mode
* @tdm_fs_mul: ratio of mclk/fs for tdm mode
* @support_rates: supported sample rate
* @support_tdm_rates: supported sample rate for tdm mode
* @support_channels: supported channels
* @support_tdm_channels: supported channels for tdm mode
* @num_fs_mul: ARRAY_SIZE of fs_mul
* @num_tdm_fs_mul: ARRAY_SIZE of tdm_fs_mul
* @num_rates: ARRAY_SIZE of support_rates
* @num_tdm_rates: ARRAY_SIZE of support_tdm_rates
* @num_channels: ARRAY_SIZE of support_channels
* @num_tdm_channels: ARRAY_SIZE of support_tdm_channels
* @type: codec type
*/
struct imx_card_plat_data {
struct imx_akcodec_fs_mul *fs_mul;
struct imx_akcodec_tdm_fs_mul *tdm_fs_mul;
const u32 *support_rates;
const u32 *support_tdm_rates;
const u32 *support_channels;
const u32 *support_tdm_channels;
unsigned int num_fs_mul;
unsigned int num_tdm_fs_mul;
unsigned int num_rates;
unsigned int num_tdm_rates;
unsigned int num_channels;
unsigned int num_tdm_channels;
unsigned int num_codecs;
enum codec_type type;
};
/*
* struct dai_link_data - specific info for dai link
*
* @slots: slot number
* @slot_width: slot width value
* @cpu_sysclk_id: sysclk id for cpu dai
* @one2one_ratio: true if mclk equal to bclk
*/
struct dai_link_data {
unsigned int slots;
unsigned int slot_width;
unsigned int cpu_sysclk_id;
bool one2one_ratio;
};
/*
* struct imx_card_data - platform device data
*
* @plat_data: pointer of imx_card_plat_data
* @dapm_routes: pointer of dapm_routes
* @link_data: private data for dai link
* @card: card instance
* @num_dapm_routes: number of dapm_routes
* @asrc_rate: asrc rates
* @asrc_format: asrc format
*/
struct imx_card_data {
struct imx_card_plat_data *plat_data;
struct snd_soc_dapm_route *dapm_routes;
struct dai_link_data *link_data;
struct snd_soc_card card;
int num_dapm_routes;
u32 asrc_rate;
u32 asrc_format;
};
struct imx_akcodec_fs_mul ak4458_fs_mul[] = {
/* Normal, < 32kHz */
{ .rmin = 8000, .rmax = 24000, .wmin = 1024, .wmax = 1024, },
/* Normal, 32kHz */
{ .rmin = 32000, .rmax = 32000, .wmin = 256, .wmax = 1024, },
/* Normal */
{ .rmin = 44100, .rmax = 48000, .wmin = 256, .wmax = 768, },
/* Double */
{ .rmin = 88200, .rmax = 96000, .wmin = 256, .wmax = 512, },
/* Quad */
{ .rmin = 176400, .rmax = 192000, .wmin = 128, .wmax = 256, },
/* Oct */
{ .rmin = 352800, .rmax = 384000, .wmin = 32, .wmax = 128, },
/* Hex */
{ .rmin = 705600, .rmax = 768000, .wmin = 16, .wmax = 64, },
};
struct imx_akcodec_tdm_fs_mul ak4458_tdm_fs_mul[] = {
/*
* Table 13 - Audio Interface Format
* For TDM mode, MCLK should is set to
* obtained from 2 * slots * slot_width
*/
{ .min = 128, .max = 128, .mul = 256 }, /* TDM128 */
{ .min = 256, .max = 256, .mul = 512 }, /* TDM256 */
{ .min = 512, .max = 512, .mul = 1024 }, /* TDM512 */
};
struct imx_akcodec_fs_mul ak4497_fs_mul[] = {
/**
* Table 7 - mapping multiplier and speed mode
* Tables 8 & 9 - mapping speed mode and LRCK fs
*/
{ .rmin = 8000, .rmax = 32000, .wmin = 1024, .wmax = 1024, }, /* Normal, <= 32kHz */
{ .rmin = 44100, .rmax = 48000, .wmin = 512, .wmax = 512, }, /* Normal */
{ .rmin = 88200, .rmax = 96000, .wmin = 256, .wmax = 256, }, /* Double */
{ .rmin = 176400, .rmax = 192000, .wmin = 128, .wmax = 128, }, /* Quad */
{ .rmin = 352800, .rmax = 384000, .wmin = 128, .wmax = 128, }, /* Oct */
{ .rmin = 705600, .rmax = 768000, .wmin = 64, .wmax = 64, }, /* Hex */
};
/*
* Auto MCLK selection based on LRCK for Normal Mode
* (Table 4 from datasheet)
*/
struct imx_akcodec_fs_mul ak5558_fs_mul[] = {
{ .rmin = 8000, .rmax = 32000, .wmin = 1024, .wmax = 1024, },
{ .rmin = 44100, .rmax = 48000, .wmin = 512, .wmax = 512, },
{ .rmin = 88200, .rmax = 96000, .wmin = 256, .wmax = 256, },
{ .rmin = 176400, .rmax = 192000, .wmin = 128, .wmax = 128, },
{ .rmin = 352800, .rmax = 384000, .wmin = 64, .wmax = 64, },
{ .rmin = 705600, .rmax = 768000, .wmin = 32, .wmax = 32, },
};
/*
* MCLK and BCLK selection based on TDM mode
* because of SAI we also add the restriction: MCLK >= 2 * BCLK
* (Table 9 from datasheet)
*/
struct imx_akcodec_tdm_fs_mul ak5558_tdm_fs_mul[] = {
{ .min = 128, .max = 128, .mul = 256 },
{ .min = 256, .max = 256, .mul = 512 },
{ .min = 512, .max = 512, .mul = 1024 },
};
static const u32 akcodec_rates[] = {
8000, 11025, 16000, 22050, 32000, 44100, 48000, 88200,
96000, 176400, 192000, 352800, 384000, 705600, 768000,
};
static const u32 akcodec_tdm_rates[] = {
8000, 16000, 32000, 48000, 96000,
};
static const u32 ak4458_channels[] = {
1, 2, 4, 6, 8, 10, 12, 14, 16,
};
static const u32 ak4458_tdm_channels[] = {
1, 2, 3, 4, 5, 6, 7, 8, 16,
};
static const u32 ak5558_channels[] = {
1, 2, 4, 6, 8,
};
static const u32 ak5558_tdm_channels[] = {
1, 2, 3, 4, 5, 6, 7, 8,
};
static bool format_is_dsd(struct snd_pcm_hw_params *params)
{
snd_pcm_format_t format = params_format(params);
switch (format) {
case SNDRV_PCM_FORMAT_DSD_U8:
case SNDRV_PCM_FORMAT_DSD_U16_LE:
case SNDRV_PCM_FORMAT_DSD_U16_BE:
case SNDRV_PCM_FORMAT_DSD_U32_LE:
case SNDRV_PCM_FORMAT_DSD_U32_BE:
return true;
default:
return false;
}
}
static bool format_is_tdm(struct dai_link_data *link_data)
{
if (link_data->slots > 2)
return true;
else
return false;
}
static bool codec_is_akcodec(unsigned int type)
{
switch (type) {
case CODEC_AK4458:
case CODEC_AK4497:
case CODEC_AK5558:
case CODEC_AK5552:
return true;
default:
break;
}
return false;
}
static unsigned long akcodec_get_mclk_rate(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct imx_card_data *data = snd_soc_card_get_drvdata(rtd->card);
const struct imx_card_plat_data *plat_data = data->plat_data;
struct dai_link_data *link_data = &data->link_data[rtd->num];
unsigned int width = link_data->slots * link_data->slot_width;
unsigned int rate = params_rate(params);
int i;
if (format_is_tdm(link_data)) {
for (i = 0; i < plat_data->num_tdm_fs_mul; i++) {
/* min = max = slots * slots_width */
if (width != plat_data->tdm_fs_mul[i].min)
continue;
return rate * plat_data->tdm_fs_mul[i].mul;
}
} else {
for (i = 0; i < plat_data->num_fs_mul; i++) {
if (rate >= plat_data->fs_mul[i].rmin &&
rate <= plat_data->fs_mul[i].rmax) {
width = max(width, plat_data->fs_mul[i].wmin);
width = min(width, plat_data->fs_mul[i].wmax);
/* Adjust SAI bclk:mclk ratio */
width *= link_data->one2one_ratio ? 1 : 2;
return rate * width;
}
}
}
/* Let DAI manage clk frequency by default */
return 0;
}
static int imx_aif_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
struct snd_soc_card *card = rtd->card;
struct imx_card_data *data = snd_soc_card_get_drvdata(card);
struct dai_link_data *link_data = &data->link_data[rtd->num];
struct imx_card_plat_data *plat_data = data->plat_data;
struct device *dev = card->dev;
struct snd_soc_dai *codec_dai;
unsigned long mclk_freq;
unsigned int fmt = rtd->dai_link->dai_fmt;
unsigned int slots, slot_width;
int ret, i;
slots = link_data->slots;
slot_width = link_data->slot_width;
if (!format_is_tdm(link_data)) {
if (format_is_dsd(params)) {
slots = 1;
slot_width = params_width(params);
fmt = (rtd->dai_link->dai_fmt & ~SND_SOC_DAIFMT_FORMAT_MASK) |
SND_SOC_DAIFMT_PDM;
} else {
slots = 2;
slot_width = params_physical_width(params);
fmt = (rtd->dai_link->dai_fmt & ~SND_SOC_DAIFMT_FORMAT_MASK) |
SND_SOC_DAIFMT_I2S;
}
}
ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
if (ret && ret != -ENOTSUPP) {
dev_err(dev, "failed to set cpu dai fmt: %d\n", ret);
return ret;
}
ret = snd_soc_dai_set_tdm_slot(cpu_dai,
BIT(slots) - 1,
BIT(slots) - 1,
slots, slot_width);
if (ret && ret != -ENOTSUPP) {
dev_err(dev, "failed to set cpu dai tdm slot: %d\n", ret);
return ret;
}
for_each_rtd_codec_dais(rtd, i, codec_dai) {
ret = snd_soc_dai_set_fmt(codec_dai, fmt);
if (ret && ret != -ENOTSUPP) {
dev_err(dev, "failed to set codec dai[%d] fmt: %d\n", i, ret);
return ret;
}
ret = snd_soc_dai_set_tdm_slot(codec_dai,
BIT(slots) - 1,
BIT(slots) - 1,
slots, slot_width);
if (ret && ret != -ENOTSUPP) {
dev_err(dev, "failed to set codec dai[%d] tdm slot: %d\n", i, ret);
return ret;
}
}
/* Set MCLK freq */
if (codec_is_akcodec(plat_data->type))
mclk_freq = akcodec_get_mclk_rate(substream, params);
else
mclk_freq = params_rate(params) * slots * slot_width;
/* Use the maximum freq from DSD512 (512*44100 = 22579200) */
if (format_is_dsd(params))
mclk_freq = 22579200;
ret = snd_soc_dai_set_sysclk(cpu_dai, link_data->cpu_sysclk_id, mclk_freq,
SND_SOC_CLOCK_OUT);
if (ret && ret != -ENOTSUPP) {
dev_err(dev, "failed to set cpui dai mclk1 rate (%lu): %d\n", mclk_freq, ret);
return ret;
}
return 0;
}
static int ak5558_hw_rule_rate(struct snd_pcm_hw_params *p, struct snd_pcm_hw_rule *r)
{
struct dai_link_data *link_data = r->private;
struct snd_interval t = { .min = 8000, .max = 8000, };
unsigned long mclk_freq;
unsigned int fs;
int i;
fs = hw_param_interval(p, SNDRV_PCM_HW_PARAM_SAMPLE_BITS)->min;
fs *= link_data->slots;
/* Identify maximum supported rate */
for (i = 0; i < ARRAY_SIZE(akcodec_rates); i++) {
mclk_freq = fs * akcodec_rates[i];
/* Adjust SAI bclk:mclk ratio */
mclk_freq *= link_data->one2one_ratio ? 1 : 2;
/* Skip rates for which MCLK is beyond supported value */
if (mclk_freq > 36864000)
continue;
if (t.max < akcodec_rates[i])
t.max = akcodec_rates[i];
}
return snd_interval_refine(hw_param_interval(p, r->var), &t);
}
static int imx_aif_startup(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_card *card = rtd->card;
struct imx_card_data *data = snd_soc_card_get_drvdata(card);
struct dai_link_data *link_data = &data->link_data[rtd->num];
static struct snd_pcm_hw_constraint_list constraint_rates;
static struct snd_pcm_hw_constraint_list constraint_channels;
int ret = 0;
if (format_is_tdm(link_data)) {
constraint_channels.list = data->plat_data->support_tdm_channels;
constraint_channels.count = data->plat_data->num_tdm_channels;
constraint_rates.list = data->plat_data->support_tdm_rates;
constraint_rates.count = data->plat_data->num_tdm_rates;
} else {
constraint_channels.list = data->plat_data->support_channels;
constraint_channels.count = data->plat_data->num_channels;
constraint_rates.list = data->plat_data->support_rates;
constraint_rates.count = data->plat_data->num_rates;
}
if (constraint_channels.count) {
ret = snd_pcm_hw_constraint_list(runtime, 0,
SNDRV_PCM_HW_PARAM_CHANNELS,
&constraint_channels);
if (ret)
return ret;
}
if (constraint_rates.count) {
ret = snd_pcm_hw_constraint_list(runtime, 0,
SNDRV_PCM_HW_PARAM_RATE,
&constraint_rates);
if (ret)
return ret;
}
if (data->plat_data->type == CODEC_AK5558)
ret = snd_pcm_hw_rule_add(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_RATE,
ak5558_hw_rule_rate, link_data,
SNDRV_PCM_HW_PARAM_SAMPLE_BITS, -1);
return ret;
}
static struct snd_soc_ops imx_aif_ops = {
.hw_params = imx_aif_hw_params,
.startup = imx_aif_startup,
};
static struct snd_soc_ops imx_aif_ops_be = {
.hw_params = imx_aif_hw_params,
};
static int be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
struct snd_pcm_hw_params *params)
{
struct snd_soc_card *card = rtd->card;
struct imx_card_data *data = snd_soc_card_get_drvdata(card);
struct snd_interval *rate;
struct snd_mask *mask;
rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
rate->max = data->asrc_rate;
rate->min = data->asrc_rate;
mask = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
snd_mask_none(mask);
snd_mask_set(mask, data->asrc_format);
return 0;
}
static int imx_card_parse_of(struct imx_card_data *data)
{
struct imx_card_plat_data *plat_data = data->plat_data;
struct snd_soc_card *card = &data->card;
struct snd_soc_dai_link_component *dlc;
struct device_node *platform = NULL;
struct device_node *codec = NULL;
struct device_node *cpu = NULL;
struct device_node *np;
struct device *dev = card->dev;
struct snd_soc_dai_link *link;
struct dai_link_data *link_data;
struct of_phandle_args args;
int ret, num_links;
u32 width;
ret = snd_soc_of_parse_card_name(card, "model");
if (ret) {
dev_err(dev, "Error parsing card name: %d\n", ret);
return ret;
}
/* DAPM routes */
if (of_property_read_bool(dev->of_node, "audio-routing")) {
ret = snd_soc_of_parse_audio_routing(card, "audio-routing");
if (ret)
return ret;
}
/* Populate links */
num_links = of_get_child_count(dev->of_node);
/* Allocate the DAI link array */
card->dai_link = devm_kcalloc(dev, num_links, sizeof(*link), GFP_KERNEL);
if (!card->dai_link)
return -ENOMEM;
data->link_data = devm_kcalloc(dev, num_links, sizeof(*link), GFP_KERNEL);
if (!data->link_data)
return -ENOMEM;
card->num_links = num_links;
link = card->dai_link;
link_data = data->link_data;
for_each_child_of_node(dev->of_node, np) {
dlc = devm_kzalloc(dev, 2 * sizeof(*dlc), GFP_KERNEL);
if (!dlc) {
ret = -ENOMEM;
goto err_put_np;
}
link->cpus = &dlc[0];
link->platforms = &dlc[1];
link->num_cpus = 1;
link->num_platforms = 1;
ret = of_property_read_string(np, "link-name", &link->name);
if (ret) {
dev_err(card->dev, "error getting codec dai_link name\n");
goto err_put_np;
}
cpu = of_get_child_by_name(np, "cpu");
if (!cpu) {
dev_err(dev, "%s: Can't find cpu DT node\n", link->name);
ret = -EINVAL;
goto err;
}
ret = of_parse_phandle_with_args(cpu, "sound-dai",
"#sound-dai-cells", 0, &args);
if (ret) {
dev_err(card->dev, "%s: error getting cpu phandle\n", link->name);
goto err;
}
if (of_node_name_eq(args.np, "sai")) {
/* sai sysclk id */
link_data->cpu_sysclk_id = FSL_SAI_CLK_MAST1;
/* sai may support mclk/bclk = 1 */
if (of_find_property(np, "fsl,mclk-equal-bclk", NULL))
link_data->one2one_ratio = true;
}
link->cpus->of_node = args.np;
link->platforms->of_node = link->cpus->of_node;
link->id = args.args[0];
ret = snd_soc_of_get_dai_name(cpu, &link->cpus->dai_name);
if (ret) {
if (ret != -EPROBE_DEFER)
dev_err(card->dev, "%s: error getting cpu dai name: %d\n",
link->name, ret);
goto err;
}
codec = of_get_child_by_name(np, "codec");
if (codec) {
ret = snd_soc_of_get_dai_link_codecs(dev, codec, link);
if (ret < 0) {
if (ret != -EPROBE_DEFER)
dev_err(dev, "%s: codec dai not found: %d\n",
link->name, ret);
goto err;
}
plat_data->num_codecs = link->num_codecs;
/* Check the akcodec type */
if (!strcmp(link->codecs->dai_name, "ak4458-aif"))
plat_data->type = CODEC_AK4458;
else if (!strcmp(link->codecs->dai_name, "ak4497-aif"))
plat_data->type = CODEC_AK4497;
else if (!strcmp(link->codecs->dai_name, "ak5558-aif"))
plat_data->type = CODEC_AK5558;
else if (!strcmp(link->codecs->dai_name, "ak5552-aif"))
plat_data->type = CODEC_AK5552;
} else {
dlc = devm_kzalloc(dev, sizeof(*dlc), GFP_KERNEL);
if (!dlc) {
ret = -ENOMEM;
goto err;
}
link->codecs = dlc;
link->num_codecs = 1;
link->codecs->dai_name = "snd-soc-dummy-dai";
link->codecs->name = "snd-soc-dummy";
}
if (!strncmp(link->name, "HiFi-ASRC-FE", 12)) {
/* DPCM frontend */
link->dynamic = 1;
link->dpcm_merged_chan = 1;
ret = of_property_read_u32(args.np, "fsl,asrc-rate", &data->asrc_rate);
if (ret) {
dev_err(dev, "failed to get output rate\n");
ret = -EINVAL;
goto err;
}
ret = of_property_read_u32(args.np, "fsl,asrc-format", &data->asrc_format);
if (ret) {
/* Fallback to old binding; translate to asrc_format */
ret = of_property_read_u32(args.np, "fsl,asrc-width", &width);
if (ret) {
dev_err(dev,
"failed to decide output format\n");
goto err;
}
if (width == 24)
data->asrc_format = SNDRV_PCM_FORMAT_S24_LE;
else
data->asrc_format = SNDRV_PCM_FORMAT_S16_LE;
}
} else if (!strncmp(link->name, "HiFi-ASRC-BE", 12)) {
/* DPCM backend */
link->no_pcm = 1;
link->platforms->of_node = NULL;
link->platforms->name = "snd-soc-dummy";
link->be_hw_params_fixup = be_hw_params_fixup;
link->ops = &imx_aif_ops_be;
} else {
link->ops = &imx_aif_ops;
}
if (link->no_pcm || link->dynamic)
snd_soc_dai_link_set_capabilities(link);
/* Get dai fmt */
ret = asoc_simple_parse_daifmt(dev, np, codec,
NULL, &link->dai_fmt);
if (ret)
link->dai_fmt = SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBS_CFS |
SND_SOC_DAIFMT_I2S;
/* Get tdm slot */
snd_soc_of_parse_tdm_slot(np, NULL, NULL,
&link_data->slots,
&link_data->slot_width);
/* default value */
if (!link_data->slots)
link_data->slots = 2;
if (!link_data->slot_width)
link_data->slot_width = 32;
link->ignore_pmdown_time = 1;
link->stream_name = link->name;
link++;
link_data++;
of_node_put(cpu);
of_node_put(codec);
of_node_put(platform);
}
return 0;
err:
of_node_put(cpu);
of_node_put(codec);
of_node_put(platform);
err_put_np:
of_node_put(np);
return ret;
}
static int imx_card_probe(struct platform_device *pdev)
{
struct snd_soc_dai_link *link_be = NULL, *link;
struct imx_card_plat_data *plat_data;
struct imx_card_data *data;
int ret, i;
data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
plat_data = devm_kzalloc(&pdev->dev, sizeof(*plat_data), GFP_KERNEL);
if (!plat_data)
return -ENOMEM;
data->plat_data = plat_data;
data->card.dev = &pdev->dev;
dev_set_drvdata(&pdev->dev, &data->card);
snd_soc_card_set_drvdata(&data->card, data);
ret = imx_card_parse_of(data);
if (ret)
return ret;
data->num_dapm_routes = plat_data->num_codecs + 1;
data->dapm_routes = devm_kcalloc(&pdev->dev, data->num_dapm_routes,
sizeof(struct snd_soc_dapm_route),
GFP_KERNEL);
if (!data->dapm_routes)
return -ENOMEM;
/* configure the dapm routes */
switch (plat_data->type) {
case CODEC_AK4458:
case CODEC_AK4497:
if (plat_data->num_codecs == 1) {
data->dapm_routes[0].sink = "Playback";
data->dapm_routes[0].source = "CPU-Playback";
i = 1;
} else {
for (i = 0; i < plat_data->num_codecs; i++) {
data->dapm_routes[i].sink =
devm_kasprintf(&pdev->dev, GFP_KERNEL, "%d %s",
i + 1, "Playback");
data->dapm_routes[i].source = "CPU-Playback";
}
}
data->dapm_routes[i].sink = "CPU-Playback";
data->dapm_routes[i].source = "ASRC-Playback";
break;
case CODEC_AK5558:
case CODEC_AK5552:
if (plat_data->num_codecs == 1) {
data->dapm_routes[0].sink = "CPU-Capture";
data->dapm_routes[0].source = "Capture";
i = 1;
} else {
for (i = 0; i < plat_data->num_codecs; i++) {
data->dapm_routes[i].source =
devm_kasprintf(&pdev->dev, GFP_KERNEL, "%d %s",
i + 1, "Capture");
data->dapm_routes[i].sink = "CPU-Capture";
}
}
data->dapm_routes[i].sink = "ASRC-Capture";
data->dapm_routes[i].source = "CPU-Capture";
break;
default:
break;
}
/* default platform data for akcodecs */
if (codec_is_akcodec(plat_data->type)) {
plat_data->support_rates = akcodec_rates;
plat_data->num_rates = ARRAY_SIZE(akcodec_rates);
plat_data->support_tdm_rates = akcodec_tdm_rates;
plat_data->num_tdm_rates = ARRAY_SIZE(akcodec_tdm_rates);
switch (plat_data->type) {
case CODEC_AK4458:
plat_data->fs_mul = ak4458_fs_mul;
plat_data->num_fs_mul = ARRAY_SIZE(ak4458_fs_mul);
plat_data->tdm_fs_mul = ak4458_tdm_fs_mul;
plat_data->num_tdm_fs_mul = ARRAY_SIZE(ak4458_tdm_fs_mul);
plat_data->support_channels = ak4458_channels;
plat_data->num_channels = ARRAY_SIZE(ak4458_channels);
plat_data->support_tdm_channels = ak4458_tdm_channels;
plat_data->num_tdm_channels = ARRAY_SIZE(ak4458_tdm_channels);
break;
case CODEC_AK4497:
plat_data->fs_mul = ak4497_fs_mul;
plat_data->num_fs_mul = ARRAY_SIZE(ak4497_fs_mul);
plat_data->support_channels = ak4458_channels;
plat_data->num_channels = ARRAY_SIZE(ak4458_channels);
break;
case CODEC_AK5558:
case CODEC_AK5552:
plat_data->fs_mul = ak5558_fs_mul;
plat_data->num_fs_mul = ARRAY_SIZE(ak5558_fs_mul);
plat_data->tdm_fs_mul = ak5558_tdm_fs_mul;
plat_data->num_tdm_fs_mul = ARRAY_SIZE(ak5558_tdm_fs_mul);
plat_data->support_channels = ak5558_channels;
plat_data->num_channels = ARRAY_SIZE(ak5558_channels);
plat_data->support_tdm_channels = ak5558_tdm_channels;
plat_data->num_tdm_channels = ARRAY_SIZE(ak5558_tdm_channels);
break;
default:
break;
}
}
/* with asrc as front end */
if (data->card.num_links == 3) {
data->card.dapm_routes = data->dapm_routes;
data->card.num_dapm_routes = data->num_dapm_routes;
for_each_card_prelinks(&data->card, i, link) {
if (link->no_pcm == 1)
link_be = link;
}
for_each_card_prelinks(&data->card, i, link) {
if (link->dynamic == 1 && link_be) {
link->dpcm_playback = link_be->dpcm_playback;
link->dpcm_capture = link_be->dpcm_capture;
}
}
}
ret = devm_snd_soc_register_card(&pdev->dev, &data->card);
if (ret) {
if (ret != -EPROBE_DEFER)
dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
return ret;
}
return 0;
}
static const struct of_device_id imx_card_dt_ids[] = {
{ .compatible = "fsl,imx-audio-card", },
{ },
};
MODULE_DEVICE_TABLE(of, imx_card_dt_ids);
static struct platform_driver imx_card_driver = {
.driver = {
.name = "imx-card",
.pm = &snd_soc_pm_ops,
.of_match_table = imx_card_dt_ids,
},
.probe = imx_card_probe,
};
module_platform_driver(imx_card_driver);
MODULE_DESCRIPTION("Freescale i.MX ASoC Machine Driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:imx-card");